#define _CRT_SECURE_NO_WARNINGS 1
/**
 * Definition for a binary tree node.
 * struct TreeNode {
 *     int val;
 *     struct TreeNode *left;
 *     struct TreeNode *right;
 * };
 */
struct TreeNode* invertTree(struct TreeNode* root) {

	if (root == NULL)
		return NULL;

	struct TreeNode* tmp = root->left;
	root->left = root->right;
	root->right = tmp;

	invertTree(root->left);
	invertTree(root->right);

	return root;

}

/**
 * Definition for a binary tree node.
 * struct TreeNode {
 *     int val;
 *     struct TreeNode *left;
 *     struct TreeNode *right;
 * };
 */
bool isSameTree(struct TreeNode* p, struct TreeNode* q)
{
	if (p == NULL && q == NULL)
		return true;

	if (p == NULL || q == NULL)
		return false;

	if (p->val != q->val)
		return false;

	return isSameTree(p->left, q->left) && isSameTree(p->right, q->right);


}